Pipeline nonstop-transmission holing and plugging system and process method thereof

Abstract

The invention discloses a pipeline nonstop-transmission holing and plugging system and a process method thereof. The system comprises a bracket, a pipeline roundness recovering device and a pressured pipeline cleaning device, wherein the bracket adopts a steel saddle-shaped bracket and is connected with a nonstop-transmission holing and plugging operating pipeline; the pipeline roundness recovering device is integrally made of aluminum alloy material and is installed in a position, which is required to be holed, of the nonstop-transmission holing and plugging operating pipeline; the pressured pipeline cleaning device is installed on the steel saddle-shaped bracket. The pipeline nonstop-transmission holing and plugging system meets the requirements of polyethylene pipeline nonstop-transmission holing and plugging and the special requirement on the ellipticity of the inner wall of the pipeline when a gas polyethylene pipeline is plugged, is high in structural strength and reliable in connection, has good pressure resistance and shock resistance and a simple structure, and is convenient and practical.

Description

technical field [0001] The invention relates to a non-stop opening and sealing system for pipelines, and also relates to a process method for the non-stop opening and sealing system for pipelines. Background technique [0002] Polyethylene pipes are used for the transportation of gas, etc., and have the characteristics of long life, corrosion resistance, and convenient construction, and have been widely used in industries such as gas and water supply. During the construction and development of the gas polyethylene pipeline network, various situations such as the relocation and diversion of existing gas polyethylene pipelines, the abolition of pipelines in some areas, and the embedding of tees on the original pipelines are often encountered. The gas cut-off operation process of ethylene flattening tool will cause long-term interruption of gas supply to large-area users, and bring direct economic losses. And low-pressure pipes larger than 63mm, usually two sets of flattening ...

AI Technical Summary

Problems solved by technology

During the construction and development of the gas polyethylene pipeline network, various situations such as the relocation and diversion of existing gas polyethylene pipelines, the abolition of pipelines in some areas, and the embedding of tees on the original pipelines are often encountered. The gas cut-off operation process of ethylene flattening tool will cause long-term interruption of gas supply to large-area users, and bring direct economic losses. And low-pressure pipes larger than 63mm, usually two sets of flattening tools are required on each side. Since a certain distance is required between the flattening tools and the flattening tools, as well as between the flattening tools and the polyethylene welding port, the traditional belt crimping The branching process requires a lot of manpower and material resources, and requires a large working space. At the same time, the use of polyethylene flattening tools to cut off the gas will cause damage to the gas polyethylene pipeline

[0003] At present, the existing non-stop opening and sealing technology of gas polyethylene pipelines still cannot well meet the special requirements of pressure pipeline installation permits; After long-term operation of ethylene pipelines, the degree of out-of-roundness of the pipelines increases, which makes it difficult to achieve effective sealing in the existing non-stop drilling operation of gas polyethylene pipelines; Among them, it is required that the cleanliness of the opening operation of the pipeline should be no residue and no falling material, so as to avoid the impact on the subsequent sealing operation surface that cannot be sealed tightly. The opening residue will also pollute the entire pipeline, causing the pipeline network Malfunctions such as poor operation

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